<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <div>
        <label>英文名:</label>
        <input type="text" v-model="name"/>
    </div>
    <div>{{name|capitalize}}</div>
</div>
</body>
<script src="../../js/vue.js"></script>
<script type="text/javascript">
    Vue.filter('capitalize',function (value) {
        if (!value) return ''
        value=value.toString()
        return value.charAt(0).toUpperCase()+value.slice(1)
    })
    var vm=new Vue({
        el:'#app',
        data(){
            return{
                name:''
            }
        }
    })
</script>
</html>
